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djrobx
join:2000-05-31
Valencia, CA
 ·AT&T U-Verse
 ·AT&T CallVantage
·Time Warner VOIP
 ·RoadRunner Cable
 ·DSL EXTREME
| reply to DonLibes
Re: Render CableCards useless?
quote:
Could someone explain why SDV would render CableCards useless?
Normally all HD channels are broadcast together, simultaneously, on different frequencies. The "guide" has information on where each channel is actually located. So when you want ABC-HD, your tuner might tune, say channel 106, stream #1, and plays it back.
But with much bandwidth as HD channels require, cable operators are moving to SDV, which makes the system operate more like an "on demand" channel. The cable box says, "Customer wants to watch Food-HD" and the cable system begins broadcasting it on a certain frequency so the box can tune into it. This will allow them to offer a virtually limitless amount of more obscure channels.
CableCard TiVo is a one way system, it has no way to tell the cable company what the user is selecting. The USB adapter will remedy that. | |
bstran
@glhp.com
 from:
tishoo 
| said by djrobx :Normally all HD channels are broadcast together, simultaneously, on different frequencies. The "guide" has information on where each channel is actually located. So when you want ABC-HD, your tuner might tune, say channel 106, stream #1, and plays it back. But with much bandwidth as HD channels require, cable operators are moving to SDV, Actually, you're wrong. One digital channel, even broadcasting at 1080p resolution, only takes up a third of the space of an entire analog channel. An analog channel is 6 Mhz wide, a digital channel is only 2 Mhz wide. So you're conclusion that they're trying to save bandwidth doesn't make sense. They're only trying to get you to get their "great dvr cablebox" so that they can leech more money out of you. Total money grab! | |
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